Pulsometee



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' 2 Sheets-Sheet 1. E. LUND, Jr.

PULSOMETER.

SM/001M101 EDWARD Lurycy-Jm 33y Patented Dec. 30,1890.

' IHI llllllll wibweo mad (No Model.) 2 SheetsSheet 2I E. LUND, Jr.PULSOMETER Patented Dec. 30, .1890.

1 EDW RD Luivu, JR.

UNITED STATES PATENT QFFrCE.

EDlVARD LUND, JR, OF STRETFORD, ENGLAND.

PU LSOMETER.

SPECIFICATION forming part of Letters Patent No. 443,532, dated December30, 1890.

Application filed October 22, 1888. Serial No. 288,777. (No model.)Patented in England March 9, 1888, No. 3,656.

To aZZ whom it may concern.-

Be it known that I, EDWARD LUND, Jr., a subject of the Queen of GreatBritain and Ireland, and a resident of Stretford, in the county ofLancaster, England, have invented a new and useful Improvement inPulsometers, (patented in Great Britain and Ireland by Letters PatentNo. 3,656, dated March 9, 1888,) of which the following is aspecification.

This invention relates to improvements in that class of double-chamberedapparatus employed for pumping liquids known as pnlsometers.

My invention consists in certain novel features of construction,hereinafter set forth and claimed, whereby a tilting steam-inlet valveis pivoted and kept in place on its seats, so as to be free fromfriction, without the aid of delicate parts. The valve-seats may beadjusted or readjust-ed with reference to the center of gravity of thevalve in its respective positions, so as to keep the valve sensitive,and at the same time the valve is more solidly supported in itsrespective positions than heretofore, and in a preferred form it isprovided with two or more sets of valvefaces which can be usedsuccessively.

Two sheets of drawings accompany this specification as part thereof.

Figure 1 of the drawings is a front view, Fig. 2 a side view, and Fig. 3a top view, of a pulsomeier constructed in accordance with thisinvention. Fig. 4 is a front sectional view, Fig. 5 a side sectionalview, and Fig. 6 a top view, on a larger scale, of the upper part of thesame pulsometer, comprising the improved steam-inlet chamber, valve, andvalve-casing. Figs. 7 and 8 are front and side sectional views of amodified valve and valve-casing. Figs. 9 and 10 are like views ofanother modified valve and valve-casing. Figs. 11 and 12 are like viewsof another modified valve and valve-casing. Figs. 13 and 14 are frontand side sectional views of the upper part of another pulsometer,illustrating additional modifications; and Figs. 15 and 16 are likeviews of another modified valve and valve-casing.

Like letters of reference indicate corresponding parts in the severalfigures.

The complete pulsomcter (represented by Figs. 1, 2, and 3) comprises thecustomary pair of hollow bottle-shaped bodies a a, containing the mainchambers of the apparatus. These parts are united by and with a hollowbase I), which communicates at the back with the air-chamber 0, atbottom with the waterinlet neck (I, and at the front with inlet-valvechambers e. The outlet-valve chambers f are located immediately abovethe inlet-valve chambers at the front of the apparatus, and communicateat top with the water-outlet neck g. The valve-chambers e f areconveniently located for obtaining access to the valves therein and areprovided in front with separate bonnets 6 f so that any one of thevalves may be readily exposed. These water-valves may be of any of theusual descriptions and form no part of the present invention.

The upper or neck ends of the bodies a a are provided in front withair-vents a a of any approved make, and above these they converge to theouter shell h of my improved steam-valve casing i. Said shell h ispreferably in the form of a small horizontal cylinder integral with themain casting, having a vertical steam-inlet neck g at top and closed atboth ends, together with the casing 2', by removable end plates W W,which are held in place by through-bolts. Said casing t'is convenientlya true cylinder externally, so as to be fitted to the shell 77, bylathe-turning and boring operations, and so as to be turned on its axisto adjust the valve-seatswith reference to the center of gravity of thevalve in its respective positions, as aforesaid. Ports are formedtherein, so as to coincide with the upper ends of the main chambers andwith the steam-inlet, as shown. Its chamber j-is open from end to end,and is provided at bottomwith a pair of valve-seats it It, pierced bysaid ports, which communicate with the respective main chambers. Thesevalve-seats It and my improved steam-valve Z common thereto are soformed that the valve tilts freely from one to the other as the vacuumis formed in the corresponding main chamber. This is preferably affectedby making the valve-seats flat and at an obtuse angle with reference toeach other, and by making the valve rectangular, as shpwn in Fig. 4-,the lower angleof the valve occupying the concave angle ofseat-intersection as afulerum. The rectangular shape of the valve adaptsit to be turned, so

as to occupy diiferent positions as its respective angles become worn,and by making it cubical, as represented in Figs. 4 and 5, the possiblechanges are increased in number to eight.

Sloping projections m m on the respective end plates it keep the cubicalvalve in place on the valve-seats without appreciable friction, theircontracted points of contact with the valve being located adjacent toits said fulcrum, and thus adjacent to the valves center of motion.

In the modification represented by Figs. 7 and 8 an oblong rectangularvalve 22 is em ployed, which may dispense with said projections m, andprovides for endwise adjustment in connection with four angular changesof position.

In the modification represented by l igs. i) and 10 a valve 0 isemployed in the form of an equilateral triangle, which provides forthree angular changes and renders the valve somewhat more sensitive.

In the modification illustrated by Figs. 11 and 12 a still moresensitive valve 1) is 0011-. structed of rhomb shape in cross-section,with two pairs of faces and two acute angles for successive use.

In the modifications illustrated by Figs. 13 and H the valve-seats 7t7." are formed on an angular projection 'r, and the valve .9, havingasinglere-entrant angle, straddles the projection and oscillates uponits apex. These figures also represent a valve-casing i made integralwith the bodies a a, instead of in the shape of a lining or bush, alsoconical projections m m on the end plate 71. in place of sloping projcot-ions, to keep the valve in place without appreciable friction. Incommon with said sloping projections these conical projections are sobeveled as to locate a contracted point of contact near thefulerum ateach end of the tilting valve.

In the modification illustrated by Figs. 15 and 16 the valve-casing isconstructed with a chamber 1, forming concave curvilinear seats 7.17:,and the valve u, fitted to said seats, is cylindrical in shape, with thesame tilting or oscillating motion, however, and capable of beingadjusted when worn by turning it on its axis, and also adjustablelengthwise, if desired.

It will be understood that in all the several modifications, as well asin the arrangement first described, the set or inclination of thevalve-seats must be so formed or adjusted at such an angle that thevalve will tilt or oscillate freely from one seat to the other, leavingthe steam-port in the vacant seat fully opened for the admission ofsteam to the correspond ing main chamber, and that the valve shall be soshifted automatically by the alternate pulsating action in therespective main chambers. Access is had to said valve and valveseats byremoving either or both of the end plates (6" (I and the valve may thenbe readily cleaned, turned, or adjusted and the seats cleaned or fittedby filing them, with very little interruption of the work of theapparatus; or the valve-casing in the preferred species may be removedbodily from its shell, if required, and another inserted in its placewithout much less of time; or said valvecasing, being cylindrical, maybe turned on its axis so as to adjust or readjust the valveseats withreference to the center of gravity of the valve in its respectivepositions, in order that the tilting valve shall be evenly and exactlyself-balanced when midway between its seats.

Having thus described my said improvements in pulsometers and severalmodifications thereof, I claim as my invention and desire to patentunder this specification- 1. A pulsometer having its steam inlet chamberprovided at bottom with valve-seats at a more or less obtuse angle and afulcrum between them,a removable tilting valve superposed upon saidfulcrum, and removable end plates having beveled projections formingcontracted contact-points at the respective ends of the valve adjacentto said fulcrum, substantially as hereinbefore specified.

2. Ina pulsometcr, the combination, with a tilting steam-inlet valve, ofa movable valvecasin g in the form of a hollow horizontal cylinderprovided internally at bottom with longitudinal valve-seats and afulcrum between them upon which said valve is superposed, arelatively-fixed shell surrounding said casing, and removable end platesclosing the ends of said shell, substantially as hereinbefore specified,whereby said valve-seats may be adjusted relatively to the center ofgravity of the valve in its respective positions by turning said casingon its axis.

The combination, in the steam inlet chamber, of a pair of flatoppositely-inclined valve-seats adjoining each other at a re-entrantangle, and a superposed tilting valve which is angular in cross-sectionand forms at two or more of its angles pivotal edges having valve-faces011 the respective sides thereof, substantially as hereinbeforespecified, whereby the valve is adapted to be used successively indifferent angular positions to utilize such pivotal edges respectively.

i. A cubical tilting valve forming pivotal edges by all of its angleswith valve-faces on the respective sides of each pivotal edge, incombination with a pair of oppositely-inclined valve-seats adjoiningeach other at an obtuse re-entant angle which constitutes the fulcrum ofthe valve, substantially as hereinbefore specified, for the purpose setforth.

In testimony whereof I affix my signature to the foregoingspecification.

EINVARI') LUN I), JR. Witnesses:

JOHN G. WILsox, WALTER GUNN.

